Letro Tech GmbH provides a solution for formal digital communication for enterprises, institutions, and governments. The platform includes LetroLetters for verifiable end-to-end encrypted letters, a digital identity feature with PostNumber and blockchain-based proofs, and integrations with CRM/ERP systems plus organizational access controls.
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Products & services
Industry:IT Consulting & Services
Outbound Leads by COHAGA
Looking for direct email addresses and phone numbers?
Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.
Secure formal communication for businesses, institutions and authorities with end-to-end encryption, verified identity, access control and audit trails.
Private and isolated deployment
Deployment in managed cloud, private cloud, on-premise or air-gapped environments with control over operations, network boundaries and synchronisation.
Data sovereignty and data residency
Align communication data by geography, operator, jurisdiction and governance model; private or federated environments depending on regulatory requirements.
Digital identity verification (PostNumber)
Verified digital identity with PostNumber, passport scan via NFC, zero-knowledge proofs and protection against spam and identity misuse.
Signature capture
Collect digital signatures directly in messages and documents, with verifiable and auditable signatures for contracts, agreements and other important documents.
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